Brake-shoe.



1.13. THOMPSON. mmsnoa. APPLIOATION'IILED APR. 13. 1908.

907,918. Patented bee. 29, 908.

INVENTOI? W W [er 4W AT NT EQE.

JAMES S. THOMPSON, OF CHIOAGi), ILLINOIS, ASSIGNOB TO EDWARD H. FALLOWS,OF NEW YORK, N. Y.

sw m-sacs.

Specification of Letters Patent.

Patented Dec. 29, 1908.

Application filed April 13, 1908. Serial No. 426,6;4.

To all whom it may concern:

Chicago, in the county of Cook and State of Illinois, have made andinvented certain new and useful Improvements in Brake-Shoes, of whichthe following is a specification.

My invention relates ,to animprovement in brake shoes, such as are usedon locomotives, and railroad or railway cars, and more particularly tobrake shoes which consist of a cast iron body portion having areinforcing member made of steel, wrought iron, or other ductile metalembedded therein, whereby in the event of a fracture of the body portionfor any reason, the parts of the shoe will be held together andprevented from dropping onto ,the rails.

More specifically my invention relates to an improvement of the brakeshoe shown and described in Letters Patent No. 642,318, granted to J. D.Gallagher, January th, 1900. In this patent is shown a reinforcingmember consisting of a wire mesh or netting in which the longitudinaland transverse strands are not connected at their intersecting points,and I have found that the strands shoe.

may at times be shifted or dis laced from their normal positions duringt e course of construction.

The purpose of my resent invention is to overcome this difiicufiy, and Iaccomplish the same by constructing a Wire mesh or netting, in which thestrands are securely fastened at their points of intersection, therebypositively preventing anypossible displacement of the same.

With this and other ends in view, my invention consists in certain novelfeatures of construction and combination of parts, as will behereinafter fully described and pointed out in the claims.

In the accompanying drawings Figure 1 is a plan view of a strip ofwiremesh or netting of the'proper dimensions to form a reinforcingmember. Fig. 2 is a lon itudinal sectional view of the same after it hasbeen bent or curved to conform to the curvature of the Fig. 3 is aerspective view of the shoe,'part being bro en away to show the resinforcin member in position. Fig. 4 is an enlarge detail view of aportion of the wire mesh or netting shown in Fig. 1. Fig. 5 is asectional view taken on the line 5-5 of Fig. 4. Figs. 6 and 7 are detailsectional views,

Isimilar to Fig. 5, sh0wing modified forms of construction.

Referring to the drawings, A represents the reinforcing member whichconsists of a strip of wire mesh or netting having openings of suitablesize, and comprising longitudinal strands Band transverse strands O, thelon gitudinal strands being preferably somewhat heavier or of greaterdiameter than the transverse strands, owing to the fact that they aresubjected to a greater strain, al-' though it will be understood thatboth sets of strands may be of the same diameter without departing-fromthe spirit of my invention. The width of the strip A is slightly lessthan the width of the shoe in which it is to be embedded, and itslength-is such that, when it is curved to conform to the curvature ofthe shoe, its curvilinear length will be sli htly less thanthecurvilinear length of the s cc. At their points of intersection D,the longitudinal and transverse strands are firmly secured againstmovement in any suitable manner, whereby all danger of their shifting oraltering their relative ositions, is positively prevented. As in icatedin Figs. 4. and 5, the Wire mesh or netting has been subjected topressure while cold, as for example, by being passed between suitablerolls, as a result of which the strands will be forced together, therebyforming interlocking depressions in their contacting surfaces at theirpoints of intersection, as indicated at E, Fig. 5, thereby being firmlyheld against relative movement, and the outer surfaces or portions ofthe strands at said points will be slightly flattened as indicated at F.If desired, the wire mesh or netting may be first heated, and thensubjected to pressure, as for example by being assed between rolls, inwhich case the stranr s will be welded together, at their intersectingpoints as indicated at G, Fig. 6.

In the modification shown in Fig. 7, the

strands are rigidly secured against movement by means of solder appliedthereto at thelii" intersecting points, as clearly indicated at While Ihave shown and described three methods of accomplishing the desiredvresult, it Will of course be understood that any other method may beemployed Without departing from the spirit of invention,

which 18 to so secure or fasten the strands at their points ofintersection, that any"dis-.

I b9 p in consruci'x wirc i ornctcing Jihad bent 01' curved in an 11am--I rm to tho 011W: 1 the S1100,

* plated in Ii; Wil'ziuhuS be sewn that 1 .hz" brake Shae aomprising muflaming member which will rm the camst shoe, and which Will. wulexgensiw fac-tufs.

1 Havihg fully: descrimd my invention Win1 2 I w, tho. mmllinution with:1 vii'li'm'vin l member 0f hands 05" whlvh, prim no i pmtinn tholvon,:n'u \\'N l- :i'l' n11 hvir inivl'sm-ling points, sub- Mi'nml.

go in the countv 01" (700k,

"vlinmia Hm ("3th du of April JAM ES TIHOMET O N.

